I'd use Zinsser's Cover Stain, or if worried about bleed through with the darker stuff, or the quality of the substrate is questionable (cheap laminates etc.), I'd use Zinsser's BIN pigmented shellac
I've not used safecoa primers
I have used Insul-X no/low odor, and they would not be up to the task of blocking dark wood like this
I've not used safecoa primers
I have used Insul-X no/low odor, and they would not be up to the task of blocking dark wood like this